Improvement in car-axle journals



D. 'DEVLIN Gar-Axle Journal.

lNo. 221,040. l Patented Oct. 28, 1879.

\ ATTESTI INVENTOR NYFETERS, PHOTOMTHOGRAPHER, WASHINGTON. Dv C.

UNITED VS'IIt'rtis DANIEL DEVLIN, OF

.PATENT OFFICE.

ST. LOUIS, MISSOURI.`

IMPROVEMENT IN CAR-AXLE JOURNALS.

Specification forming part of Letters Patent No. 221,040, dated October28, 1879; application iirlcd July 7, 1879.

To all whom it may concern:

Be it known that I, DANIEL DEvLIN, of the city of St. Louis, in theSta-te of Missouri, have invented certain Improvements in Oar-Axle Boxesand Journals; and I do hereby declare that the following specificationis a full, clear, and exact description of the same, reference being hadto the accompanying drawings, and to the letters of reference markedthereon.

This invcntionconsists First, in the provision of a metallic bearing, lslgrn Ikfor otherwise secured on a reduced end of the axle. Thesaidsleeve is made tapering from its center toward its ends, and turns in anordinary brass boxing, the bearing-sgtlace of which is formed to theshape'tof the said bearing-sleeve, so that the necpssity of collaps` onthe axle to limit endwise movement of the same is overcome, as thetapering collar will perform this function equally as well. Theconstruction of my improved journal or bearing also obviates thenecessity of waste in the box, as the lower face of the journal will runin a body of oil in the oilcella-r, owing to the fact that it projectsbelow the wall of said box. It is preferred to make the reduced portionsof the axle and the bore of the bearing-sleeve slightly tapering, sothat in removing the carwheel from the axle there is less liability ofbending the ends of the axle in pressing the bearing-sleeves off withthe car-wheel.

Second, in certain details of construction, as will hereinafter morefully appear.

In the drawings, Figure l is a vertical sec tion. Fig. 2 is a top plan,and Fig. 3 is a transverse section at line X X.

A is the boxing, formed in two sections, A A2, which are united togetherby alap or other joint, a. The two sections may be bolted to gether bybolts, or the ordinary bolts that secure Athe box to the truck -framemay pass through the ears a a' ofthe boxing to hold the two sectionstogether. This construction allows the boxing to be cast without cores,and hence is much cheaper than the ordinary box; and, should one sectionbe broken, it can be readily replaced without the loss of the whole box.

B is the axle, having a reduced portion B',

on which is shrunk or otherwise secured the bearing-collar O, thebearing-surface of which tapers from its center c to its ends, as shown,and the bearing box or brass D is shaped to fit the tapering surfaces ofthe collar. rIhis construction obviates the necessity of collars thesame, as the tapering formof the collar C performs'this function equallyas well, and at the same time takes up thelubricant and evenly andperfectly distributes it to the bearing-surfaces.

It is preferred to form the bearing-collar somewhat longer than thebrass or box I), and providing the projecting portions of the collarwith circular grooves c, to arrest the oil and conduct it back to theoil-cellar, and thus prevent its leaking out through the axle-opening ofthe box aroundthe axle. The axle may also be provided with a groove, b,to assist in pre- `venting the said leakage of oil.

Again, it is preferred to have the end of the axle project a smalldistance outside thebearing-collar, so as to allow ahydraulic rain orother device to act when it is desired to remove said bearing-collar.

A dowel-pin may be inserted in a groove be tween the bearing-collar Cand the axle B to preenttaheturning of said collar upon the axle. Byr myinproved construction the rapid wear of vthe axle-journal is overcome,and the lifetime of the same is indefinitely lengthened, for the reasonthat the collar or sleeve takes all the wear, and when it becomes soworn as to be unfit for use it can be readily removed and replaced by anew one without injuring the axle; and, although it is preferred to usea double-taperin g sleeve, as shown, still it is evident that a plaincylindrical sleeve can be used, and, with a collar on the end of theaxle, effect the purpose above stated.

With my improved construction the axlebox -can be made to t the axlevery compactly between the bearings and the Wheel,

sections.

Having thus fully described my said inven tion, what I claim is- 1. Thecar-axle provided with a bearing-col-l on the axle to limit the endwisemovement of owing to the box being put together in two 4. Thecombination, with a removable bearing-collar, C, of Jche axle B,arranged to projeet outside the said bearing-collar, as and for thepurpose set forth.

DANIEL DEVLIN.

Witnesses:

ROBERT BURNS, FRANK DEFFRY.

